PAGE 4 ATTENTION CATALOG USER CONT D 4 INTERNAL A C COMPRESSOR PARTS WILL NOT BE AVAILABLE FOR SERVICE BEGINNING WITH THE 1992 MODELS EXTERNAL A C COMPRESSOR PARTS WILL CONTINUE TO BE SERVICED 5 A NEW DESIGNED A C COMPRESSOR REQUIRES THE USE OF A NEW REFRIGERANT R134A 6 FOR BLOWER MOTOR AND IMPELLER FAN APPLICATION CONSULT THE RECENTLY ISSUED CHART ON GREEN PAPER FOR ACCURATE VEHICLE USAGE EVENTUALLY ALL CATALOGS WILL REFLECT REVISED MODEL USAGE STATEMENTS ADDITIONAL INFORMATION 1 ASSEMBLY NUMBERS PREVIOUSLY LISTED IN CHARTS IN THE CATALOG TEXT WILL NOW APPEAR IN THE UPDATED CASTING TO SERVICE NUMBER REFERENCE CHART IN THE REFERENCE CATALOG EXCLUSIVE CANADIAN AND OR OVERSEAS EXPORT PARTS ARE PUBLISHED IN THIS CATALOG IN ORDER TO FACILITATE VEHICLES SOLD IN CANADA OR OVERSEAS THAT MAY REQUIRE SERVICE IN THE UNITED STATES YOUR FEEDBACK AND SUGGESTIONS ARE REQUESTED TO ASSIST US IN PUB LISHING THE MOST COMPLETE AND COMPREHENSIVE CATALOGS POSSIBLE PLEASE ADDRESS ANY CORRESPONDENCE CONCERNING THIS PUBLICATION TO THE ATTENTION OF THE ENGINEERING DEPARTMENT AND INCLUDE YOUR ADDRESS AND DEALER CODE TO ENSURE A TIMELY REPLY TO ENSURE ACCURATE AND TIMELY RESPONSE TO WRITTEN CORRESPONDENCE INVOLVING CATALOG ILLUSTRATIONS PLEASE INCLUDE THE ART NUMBER DISPLAYED IN THE UPPER RIGHT CORNER OF EACH ILLUSTRATION UNLIKE PAGE NUMBERS THIS NUMBER REMAINS CONSTANT FROM PUBLICATION TO PUBLICATION AND PROVIDES POSITIVE IDENTIFICATION THIS PUBLICATION IS A PRODUCT OF THE ENGINEERING DEPARTMENT AND ALL DATA HEREIN WAS DERIVED FROM THE LATEST ENGINEERING INFORMATION GENERAL MOTORS SERVICE PARTS OPERATIONS WATERFORD MICHIGAN 48329 4 1992 GENERALMOTORsSERVmEPARTSOPERAUONS ITTRUCK 63P i55